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Asphalt recyclated material for base and subbase layers of pavements
Winterová, Karin ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
This bachelor thesis reviews the use of asphalt recyclated material and its application in the base and subbase layers of pavements. In addition to domestic knowledge, a foreign experience with the use of tested material and also covers currently used technologies for the processing of asphalt recyclates into the constructional layers of roads.is presented. Possibile application of asphalt recyclates in the unblemished and coated subbase layer of the road are verified in the practical part
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Skid resistance of pavements
Stránský, Jakub ; Stehlík, Dušan (referee) ; Hýzl, Petr (advisor)
Bachelor’s thesis main purpose is to process the knowledge about skid resistance, its mesurement, the equipment used and its failures and suitable repairs of solid and nonsolid roadways. The practical part evaluates skid resistance properities of selected highway sections with solid and nonsolid surface on the basis of measured values of PTV.
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Low volume roads
Kučera, Vlastimil ; Stehlík, Dušan (referee) ; Hýzl, Petr (advisor)
Thesis deals with an issue of low-volume roads and brings basic informations about their design. The most of the low-volume roads in the world are unpaved roads, while in the Czech republic there are not enought of experience with their construction, therefore a foreign literature was used as an almost exclusive source. The advantages of the roads with unpaved materials are, they are environment-friendly and money saving, therefore when correct procedure is used, good quality material is chosen and proper maintenance is used, they are advisable alternative to normally used asphalt surfaces. With increasing volume of vehicles their advantages decreases. They are suitable for a road surfaces in protected landscape areas, because they represents minor impact on the landscape.
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Usage of foam bitumens in asphalt mixtures
Venclíková, Michaela ; Komenda, Radek (referee) ; Hýzl, Petr (advisor)
In this diploma thesis there are described the issues use of foamed bitumen as binder in asphalt mixtures. The thesis is divided into two parts, theoretical and practical. The aim of theoretical part was to elaborate an overview of technologies, which allow to reduce the temperature during the production and laying of asphalt mixtures. The aim of the practical part was to compare the selected empirical and functional parameters of two types of asphalt mixtures produced in two variants, with hot bitumen and foamed bitumen. Attention was paid mainly to stiffness and low temperature parameters.
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Crude oil materials on pavement surface
Slavíček, Michal ; Stehlík, Dušan (referee) ; Hýzl, Petr (advisor)
The bachelor thesis addresses an issue of an influence of crude oil materials on pavement surface. An analysis of valid legislation for transportation of dangerous goods in the European Union and in the Czech Republic is provided. The thesis is also concerned with transportation of dangerous goods, especially class 3: Flammable liquids in tanks, specifics of the tanks, requirements for their use, accidents and problem solving connected to their disposal with respect to the environment. The practical part deals with a test of resistance of Bituminous Mixtures to fuel , which is more specified in norm ČSN EN 12697-43 "Bituminous mixtures - Test methods for hot mix asphalt - Part 43: Resistance to fuel. The thesis is concluded with the description of results of the influence of fuel effect on specimens made of specific Bituminous Mixtures.
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Microsurfacing
Koudelka, Tomáš ; Stehlík,, Dušan (referee) ; Hýzl, Petr (advisor)
This thesis is focused on slurry surfacing technology, particularly on microsurfacing. The theoretical part describes various issues of this technology: composition, manufacturing process, ecology, storage, making and design of the mixture. The practical part presents results of cohesion tests, wearing tests, consolidation and breaking time that has been performed on the mixture for microsurfacing. During the tests, the temperature of both bitumen emulsion and aggregate has been changed several times.
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Evaluation of properties of PMB containing binder from RAP
Měšťanová, Petra ; Hýzl, Petr (referee) ; Dašek, Ondřej (advisor)
Subject of this diploma thesis is to describe the effect of adding different amount of aged binder recovered from RAP on the change of properties of polymer modified bitumen. The RAP containing unmodified bitumen and the RAP where we can expect bitumen modification are used to recover binder. The binder obtained from RAP is dosed into the virgin binder in amount of 15 %, 30 % and 50 %. The methods of recycling of flexible pavements, extraction and regeneration of asphalt binders, rejuvenating of their properties and methods of empirical and functional laboratory tests are described in the theoretical part. The practical part deals with evaluating and comparison of the results mixed binders properties.
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Low temperature behaviour of asphalt mixtures
Štěpanovský, Vlastimil ; Stehlík, Dušan (referee) ; Hýzl, Petr (advisor)
In this thesis it was paid attention to behaviour asphalt mixture of low temperature. The theoretical part deals with the technologies for reducing of mixing temperature and with their comparison. The thesis is notionally divided into two parts. The practical part is focused on the assessment of low temperature features by the test of asphalt mixture resistance against the formation of frost cracks according to ČSN EN 12697-46. Three mixtures were tested. The aim was to find if the low-temperature characteristics get worse compared to the commonly tested mixtures of the same gradation.
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Permanent deformation on asphalt mixtures
Bambulová, Lucie ; Coufalík, Pavel (referee) ; Hýzl, Petr (advisor)
The bachelor thesis deals with a description of the laboratory properties of aged bituminous binders in relation to permanent deformation. The theoretical part deals with the empirical tests: needle penetration and softening point. There is also explained the procedure and the principle of the MSCR test. In the practical part are evaluated the properties of fifteen tested bituminous binders and based on the results are made two plates which are tested to permanent deformation.
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